Long-term thermophilic mono-digestion of rendering wastes and co-digestion with potato pulp

Bayr, Suvi; Ojanperä, M.; Kaparaju, Prasad; Rintala, Jukka

doi:10.1016/j.wasman.2014.06.005

Cited by 30 publications

(16 citation statements)

References 31 publications

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“…It is known that the CH 4 production from lignocellulosic biomass by AD usually generates low CH 4 content around 50-60% (Zhu et al, 2010). The relative higher CH 4 contents obtained in this study were probably due to the higher lipids contents of 2-8% in the feedstock PPW and PPW-FR as compared to <1% in woody biomass (Bayr et al, 2014). Lipids have lower oxidation state and higher energy storage than carbohydrates and thereafter tend to generate higher CH 4 content in AD system.…”

Section: Methane Productionmentioning

confidence: 48%

Anaerobic digestion of pre-fermented potato peel wastes for methane production

Liang

McDonald

2015

Waste Management

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Section: Methane Productionmentioning

confidence: 48%

Anaerobic digestion of pre-fermented potato peel wastes for methane production

Liang

McDonald

2015

Waste Management

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“…AD technologies have shown sufficient adaptability to different feedstocks [22]. Although AD is a commercial reality for a range of wastes, anaerobic digestion of single waste may be associated with certain drawbacks, such as unbalanced nutrients, rapid acidogenesis, poor buffering capacity, high ammonia nitrogen concentration, and inhibition of long chain fatty acids, which can inhibit methanogenesis and lead to severe instability and process disruption [23][24][25].…”

Section: Ad Process and Main Parametersmentioning

confidence: 99%

“…As shown in Figure 2, a range of feedstocks can be co-digested at a suitable blend ratio to maintain optimum conditions required for metabolic activity and improved biogas production for heat and electricity. Anaerobic co-digestion has been shown to be a viable option to alleviate the drawbacks of mono-digestion, while enhancing the economic feasibility of the existing AD plants by increasing methane yields [23,31,45]. Various advantages of AnCoD systems are presented in Figure 3.…”

Section: Anaerobic Co-digestion (Ancod)mentioning

confidence: 99%

“…For the implementation of AnCoD, other than the aforementioned factors that govern the conventional AD process, additional considerations, including the selection of co-substrates and their mixing ratio, should be taken. For instance, mixing materials of high and low C/N ratios, such as organic solid waste mixed with animal manure or sewage, can help achieve optimum C/N ratios (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) [26,53].…”

Section: Ancod Process and Main Parametersmentioning

confidence: 99%

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A Review on Anaerobic Co-Digestion with a Focus on the Microbial Populations and the Effect of Multi-Stage Digester Configuration

et al. 2019

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Recent studies have shown that anaerobic co-digestion (AnCoD) is superior to conventional anaerobic digestion (AD). The benefits of enhanced bioenergy production and solids reduction using co-substrates have attracted researchers to study the co-digestion technology and to better understand the effect of multi substrates on digester performance. This review will discuss the results of such studies with the main focus on: (1) generally the advantages of co-digestion over mono-digestion in terms of system stability, bioenergy, and solids reduction; (2) microbial consortia diversity and their synergistic impact on biogas improvement; (3) the effect of digester mode, i.e., multi-stage versus single stage digestion on AnCoD. It is essential to note that the studies reported improvement in the synergy and diverse microbial consortia when using co-digestion technologies, in addition to higher biomethane yield when using two-stage mode. A good example would be the co-digestion of biodiesel waste and glycerin with municipal waste sludge in a two-stage reactor resulting in 100% increase of biogas and 120% increase in the methane content of the produced biogas with microbial population dominated by Methanosaeta and Methanomicrobium.

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“…Co-digestion modeling seemed to be complex as it requires pH changes and inhibitory intermediate deposition like organic acids. [41] Investigation was made with respective to mono and co-digestion of potato pulp waste. As potato pulp is rich in proteins and lipids, it is considered to be ideal medium for methane yield.…”

Section: Microwave and Ozone Pretreatmentmentioning

confidence: 99%

A Study on Anaerobic Co-digestion of Sewage Sludge for Bio-gas Production

Diaz¹

2017

DJ IJAMMR

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Renewed attention in anaerobic sludge digestion has led to further development in recovery of biogas. This includes studies on various disintegration mechanisms to enhance the digestion efficiency of sludge and food waste by reducing waste activated sludge. Biofuel extension from sludge via biological disintegration tends to be an efficient method because of increase in demand of renewable ecofriendly energy. As the role of extracellular polymeric substances is vital in flocculation, its removal upgrades the pretreatment task throughout. This article intends to provide a general overview of methods in evaluating the proficiency of pretreatment on anaerobic integration and promotion in bioenergy generation. Since higher percentage of biogas extraction remains to be tedious process from collection of waste to generation to utilization, it is thus required a multi-disciplinary strategy to further progress anaerobic co-digestion by resolving all the prevailing unfavorable circumstances.

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Long-term thermophilic mono-digestion of rendering wastes and co-digestion with potato pulp

Cited by 30 publications

References 31 publications

Anaerobic digestion of pre-fermented potato peel wastes for methane production

Anaerobic digestion of pre-fermented potato peel wastes for methane production

A Review on Anaerobic Co-Digestion with a Focus on the Microbial Populations and the Effect of Multi-Stage Digester Configuration

A Study on Anaerobic Co-digestion of Sewage Sludge for Bio-gas Production

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